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A car with a mass of 1,500 kg is traveling at a speed of 30 m/s. What force must be applied to stop the car in 3 seconds?
15,000 N must be applied to stop the car in 3 seconds. Solution: 30 = 0 + 3a; 30 = 3a; a = 30 ÷ 3; = 10 m/s²; Force = mass × acceleration; = 1500 × 10; = 15,000 N.
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